Fastening means for butt-joint metal culverts.



@ii @i? J. H. DEAN.

FASTENING MEANS FOR BUTT JOINT METAL GULVBRTS.

APPLICATION FILED rm. 3. 1913.

Patented Sept 23, 1913.

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JOHN H. DEAN, OF BIRMINGHAM, ALABAMA.

FASTENING MEANS FOR BUTT-JOINT METAL CULVERTS.

messes.

To cZZ whom it may concern Be it known that 1, JOHN H. DEAN, a citizenof the United States, residing at Birmingham, in the county of Jeffersonand State of Alabama, have invented certain new and useful Improvementsin Fastening Means for Butt-Joint Metal Culverts, of which the followingis a specification, reference being had therein to the accompanyingdrawing.

This invention relates to keys in the form of specially constructedbolts for use in fastening together and retaining in connected relationthe complementary sections of my improved butt-joint nestable metalculvert which I have particularly set forth and covered in Patent No.1,049,816, granted to me on January 7, 1918. The type of butt-jointnestable culvert herein referred to is one in which said culvert is madeup of metal sections, preferably corrugated half sections, whichsections have rigid metal strips or bars welded or riveted to the sidesof said sections at or near their longitudinal edges, the strips or barsbeing so arranged with respect to said metal sections that spaces orpassageways are formed at intervals between the sections and said stripsfor receiving the bolts. In assembling this type of culvert, thecomplementary sections are placed together with their longitudinal edgesmeeting or abutting, and the type of bolt hereinafter more particularlyreferred to, is provided for engaging within the passageways formedbetween the sections and the strips with a view to providing a means forforcing the longitudinal edges of complementary sections into trueabutting relation, and furthermore for retaining said edges in suchposition. These bolts are also adapted to serve as a means forconnecting the adjacent strips of complementary sections together,whereby said complementary sections are held and re tained in properassembled relation.

I have illustrated my invention in the ac companying drawing, in which,

Figure 1 is a side elevation of a butt-joint culvert illustrating myimproved bolt in proper position for accomplishing the purpose for whichit is intended; Fig. 2 is a transverse sectional view of a portion ofthe culvert taken on the line 2-2 of Fig. 1, and showing thelongitudinal edges of the culvert in abutting relation and one form ofbolt inserted in a passageway formed he- Specification of LettersPatent.

Application filed February 3, 1913.

Patented Sept. 23, 1 913.

Serial No. 745,903.

tween the side of the culvert and the metal strips; Fig. 3 is a similarview, showing a modified form of bolt inserted within one of thepassageways for holding and retaining the sections in proper position;Fig. 4t is a perspective view of the bolt illus trated in 2; Fig. 5 is aperspective view of the bolt illustrated in Fig. 3, and Fig. 6 is asectional view taken on the line (5 6 of Fig. 2.

Referring to the drawing, it is to be noted that each section, indicatedat 1, of the butt-joint culvert, is shown provided with corrugationswhich are arranged parallel with opposite ends thereof, and that whenthese sections, which are preferably half sections, are arranged inassembled position to form a completed culvert, the corrugations ofupper and lower sections coincide with each other, or in other wordseach convex and concave corrugation of an upper section is directly inline with the convex and concave corrugations respectively of thesection below it. It may be further noted that these sections areconstructed without the usual outstanding flanges, but that thelongitudinal edges of complementary sections are adapted to abut asindicated at 2, in the drawing, so that when said sections are connectedtogether with their longitudinal edges meeting or abutting, thecorrugated culvert, for all intents and purposes, has the appearance andstrength of an integral corrugated cylinder.

As has heretofore been referred to, the culvert sections are provided ator near their longitudinal edges, with rigid metal strips or bars 3,which are secured to the convex corrugations of each section, n'eferablyby welding or riveting the same thereto, and it will be noted thatpassageways, as indicated at 4, are formed between the sides of thecorrugated culvert sections and the said metal strips at pointsintermediate the convex corrugations of said sections, and thesepassageways are provided for receiving my improved bolt.

In the form of key or bolt shown in Figs. 2 and 1 of the drawing, thesame is constructed with an enlarged head 5, and a specially formedshank, which shank has a portion intermediate its ends, indicated at 6,which is adapted to engage the side of the culvert at a point where itslongitudinal edges meet or abut, and also has portions indicated at '77,which engage respectively the inner face of the adjacent metal strips 33. It will thus be seen that when this bolt is inserted within one orthe passageways formed between the side of the culvert and the adjacentstrips 38, that the shank of said bolt engages both. the side or theculvert and said metal strips, and thus serves to properly position thelongitudinal meet ing edges or the culvert. The passageways 4 are formeddue to the fact that the metal strips 3 are secured to the tomescorrugations of the culvert, so that saidpassageways are arranged atintervals between said convex corrugations, and in order to prevent theturning of the bolt within said passageways, the enlarged head 5 of saidbolt is so constructed along one of its sides that it conforms to theconcave corru ation of said culvert. It will thus be seen that theportions 6 and 77 of the shank are retained in prbper engagement withthe side of the culvert section and the inner face of the strips 3-3respeetively, for accomplishing the purpose for which they are intended.

The shank of the bolt is of suflic'ient length to project below thebottom edge of the lower strip 3, and this end is screw-threaded forreceiving a nut 8 which is adapted to be screwed into engagement withsaid lower strip and thiis serve to securely fasten said bolt inposition after being applied to the culvert as above set forth.Furthermore, it is to be noted that the head 5 is of su'flieient size toproject over and bear against the top edge of the upper strip, in whichevent the bolt is held in proper position after being applied, andprevented from'passing entirely through the passageway.

In Figs. 3 and 5 or the drawing, is illustrated a slightly modified formor bolt, said bolt being identical in every respect with that shown inFigs; 2*and 4 of the drawing, excepting, however, that the intermediateportion 6 of the shank is somewhat lengthened in order to provide fortheforming of a horizontal portion 9 of said shank which serves togetherwith the bottom edge or the lower strip 3, as ab'earing for the nut 8.

In assembling this type or culvert, complementary sections are placedtogether as shown, and the bolts are inserted within the passagewaysformed between the sides of the culvert sections and the metal strips8-3, and when so inserted serve to properly position the abuttinglongitndinal edges of complementary sections, and this diie to theengagement of the shank of said bolt with the sides of the culvertsections and theinher face of the metal strips, as has been referred toabove. These bolts not only serve to'properly position said longitudinaledges of complementary sections, but also serve to retain the same intrue abutting relation and furthermore act as a means for tying adjacentstrips 3-3 together for hold: 4

ing complementary sections in connected and another portion thereofengaging the strips, for the purpose specified;

2. A bolt adapted for insertion within a passageway formed between theside of a.

butt-joint c'nlvert and metal strips secured thereto, and adapted forholding the lbh'gitudinal meeting edges of said culvert in abuttingrelation, said holthaving a head serving to prevent turning of the boltwithin said passageway. 1

'3. A bolt adapted for insertion withina passageway formed between theside or a butt-joint culvert and metal strips secured thereto, andadapted for holding and retain the longitudinal meeting edges" of saidculvert in abuttingrelation, said bolt hav= ing a head adapted to engagethe side'of the culvert and thereby prevent turning ofthe bolt withinsaid passageway.

A bolt adapted for insertien within a passageway formedbetween the sideof a.

butt-joint culvert metal "strips secured thereo, and adapted for holdingand retain ing the longitudinal meeting edges of said culvert inabutting relation, the shank of said bolt having its end portionsengaging respectively the inner races of adjacent strips, and a portionintermediate its ends for eng ging the side of the culvert at a pointwhere the longitudinal edges of said culvert meet, for the purposespecified.

5. A bolt adapted for insertion within a passageway formed between theside of a butt-joint culvert and metal strips secured thereto, andadapted for holding and retain= his; the longitudinal meeting edge ofsaid culvert in abuttingrelation, said bolt Corn prising a head adaptedfor engagement with the top edge of the upper strip of meat metalstrips,- a shank so formed as to engage both the side or the culvertan'dth'e inner faces of said metal strips, and a nut secured to saidshank ahdaaapt-ed foreng-agerhnt the turning of sa'id b'olt within thepassageway and alsb projecting into engagement with the top edge of theupper strip of the adjacent metal strips, a shank so formed as to engageboth the side of the culvert and the inner faces of said adjacentstrips, said shank having a horizontal portion at the lower end thereof,and a nut having screwthreaded engagement with the shank and adaptedwhen in proper position to bear against said horizontal portion and thebottom edge of the lower strip.

7 In combination with a corrugated metal culvert having longitudinalabutting edges and metal strips secured to the convex corrugations ofsaid culvert along its longitudinal edges thereby forming passagewaysbetween the concave corrugations and said strips, a bolt adapted forinsertion within the passageways for holding and retaining thelongitudinal edges of the culvert in abutting relation, said bolt havinga head which is so shaped along one of its edges as to coniorln to thecurvature of the concave corrugation and thereby prevent turning of thebolt within said passageway.

In testimony whereof I have affixed my signature in presence of twowitnesses.

JOHN H. DEAN.

Witnesses:

Gnaon WVns'rnnooKs, H. O. BERNARD.

Copies of this patent may be obtained for five cents each, by addressingthe Commissioner of Patents, Washington, D. G.

